Code of Federal Regulations Title 21. Food and Drugs § 21.558.300 Ivermectin

(1) 1.8

Weaned, growing-finishing swine: For treatment and control of gastrointestinal roundworms (Ascaris suum, adults and fourth-stage larvae; Ascarops strongylina, adults; Hyostrongylus rubidus, adults and fourth-stage larvae; Oesophagostomum spp., adults and fourth-stage larvae); kidneyworms (Stephanurus dentatus, adults and fourth-stage larvae); lungworms (Metastrongylus spp., adults); threadworms (Strongyloides ransomi, adults and somatic larvae); lice (Haematopinus suis); and mange mites (Sarcoptes scabiei var. suis).

Feed as the only feed for 7 consecutive days to provide 0.1 milligrams per kilograms (mg/kg) of body weight per day. Withdraw 5 days before slaughter.

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(2) 1.8

Bacitracin methylenedisalicylate, 10 to 30

Weaned, growing-finishing swine: For treatment and control of gastrointestinal roundworms (Ascaris suum, adults and fourth-stage larvae; Ascarops strongylina, adults; Hyostrongylus rubidus, adults and fourth-stage larvae; Oesophagostomum spp., adults and fourth-stage larvae); kidneyworms (Stephanurus dentatus, adults and fourth-stage larvae); lungworms (Metastrongylus spp., adults); threadworms (Strongyloides ransomi, adults and somatic larvae); lice (Haematopinus suis); and mange mites (Sarcoptes scabiei var. suis); and for increased rate of weight gain and improved feed efficiency.

Feed as the only feed for 7 consecutive days to provide 0.1 mg/kg of body weight per day. Withdraw 5 days before slaughter.

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(3) 1.8

Bacitracin methylenedisalicylate, 250

Weaned, growing-finishing swine: For treatment and control of gastrointestinal roundworms (Ascaris suum, adults and fourth-stage larvae; Ascarops strongylina, adults; Hyostrongylus rubidus, adults and fourth-stage larvae; Oesophagostomum spp., adults and fourth-stage larvae); kidneyworms (Stephanurus dentatus, adults and fourth-stage larvae); lungworms (Metastrongylus spp., adults); threadworms (Strongyloides ransomi, adults and somatic larvae); lice (Haematopinus suis); and mange mites (Sarcoptes scabiei var. suis); and for control of swine dysentery associated with Treponema hyodysenteriae on premises with a history of swine dysentery, but where symptoms have not yet occurred, or following an approved treatment of disease condition.

Feed as the only feed for 7 consecutive days to provide 0.1 mg/kg of body weight per day. Withdraw 5 days before slaughter.

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(4) 1.8 to 11.8

Adult and breeding swine: For treatment and control of gastrointestinal roundworms (Ascaris suum, adults and fourth-stage larvae; Ascarops strongylina, adults; Hyostrongylus rubidus, adults and fourth-stage larvae; Oesophagostomum spp., adults and fourth-stage larvae); kidneyworms (Stephanurus dentatus, adults and fourth-stage larvae); lungworms (Metastrongylus spp., adults); threadworms (Strongyloides ransomi, adults and somatic larvae, and prevention of transmission of infective larvae to piglets, via the colostrum or milk, when fed during gestation); lice (Haematopinus suis); and mange mites (Sarcoptes scabiei var. suis).

Feed as the only feed for 7 consecutive days to provide 0.1 mg/kg of body weight per day. Withdraw 5 days before slaughter.

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(5) 1.8 to 11.8

Bacitracin methylenedisalicylate, 250

Pregnant sows: For treatment and control of gastrointestinal roundworms (Ascaris suum, adults and fourth-stage larvae; Ascarops strongylina, adults; Hyostrongylus rubidus, adults and fourth-stage larvae; Oesophagostomum spp., adults and fourth-stage larvae); kidneyworms (Stephanurus dentatus, adults and fourth-stage larvae); lungworms (Metastrongylus spp., adults); threadworms (Strongyloides ransomi, adults and somatic larvae, and prevention of transmission of infective larvae to piglets, via the colostrum or milk, when fed during gestation); lice (Haematopinus suis); and mange mites (Sarcoptes scabiei var. suis); and for control of clostridial enteritis caused by Clostridium perfringens in suckling piglets.

Feed as the only feed for 7 consecutive days to provide 0.1 mg/kg of body weight per day. Withdraw 5 days before slaughter. Feed bacitracin methylenedisalicylate Type C medicated feed to sows from 14 days before through 21 days after farrowing on premises with a history of clostridial scours.

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(6) 18.2 to 120

Adult and breeding swine: For treatment and control of gastrointestinal roundworms (Ascaris suum, adults and fourth-stage larvae; Ascarops strongylina, adults; Hyostrongylus rubidus, adults and fourth-stage larvae; Oesophagostomum spp., adults and fourth-stage larvae); kidneyworms (Stephanurus dentatus, adults and fourth-stage larvae); lungworms (Metastrongylus spp., adults); threadworms (Strongyloides ransomi, adults and somatic larvae, and prevention of transmission of infective larvae to piglets, via the colostrum or milk, when fed during gestation); lice (Haematopinus suis); and mange mites (Sarcoptes scabiei var. suis).

Top dress on daily ration for individual treatment for 7 consecutive days to provide 0.1 mg/kg of body weight per day. Withdraw 5 days before slaughter.

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